Kohler 28 EFI Thats a no brainer with fuel prices going way up. You'll like it. I'm surprised they are giving you the same price on either engine, I thought the efi is higher priced. ?? Great mower too.

I dont know if they have more power persay, I read somewhere the Kawi's had more torque in similar engines but the Briggs has 3 more ponies, that might not apply here. I would think the fuel injected would have more trade in value. But I honestly don't have any experience in either of these engines. We just ordered a Lazer HP 50" Triton w/27hp Kholer, the dealer siad it was kinda over kill but the more ponies the better I say.

The efi engine would normally be about $900 more than the Briggs. However I believe the Briggs engine was only available on the Lazer XS for 2005. This machine is heavier and has larger pumps and a bit pricier than the regular Lazer Z. So the price is about the same because of the difference in the model lazer.

The way it was explained to me is that in 2005, both of these mowers were actually XS models(bigger pumps etc...) But there was no actual XS model designator then. So both mowers are comparable to the '06 XS models.
Either mower is going for $8700